Naomi Watts and Robin Wright will star in the erotic drama The Grandmothers.

Based on the novel by Doris Lessing, the Oscar nominated actresses will play lifelong friends who fall in love with each other’s teenage sons (Xavier Samuel and James Frecheville).

Anne Fontaine (Coco avant Chanel) will direct a screenplay by Christopher Hampton (Atonement).

The Australian/French co-production will be released in 2013.

Source: The Hollywood Reporter